Bug 1765640

Summary: Creating a trunk with many subports is really slow
Product: Red Hat OpenStack Reporter: ffernand <ffernand>
Component: python-networking-ovnAssignee: ffernand <ffernand>
Status: CLOSED ERRATA QA Contact: Eran Kuris <ekuris>
Severity: medium Docs Contact:
Priority: medium    
Version: 13.0 (Queens)CC: apevec, lhh, majopela, njohnston, scohen
Target Milestone: z11Keywords: Triaged, ZStream
Target Release: 13.0 (Queens)   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: python-networking-ovn-4.0.3-18.el7ost Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1765678 (view as bug list) Environment:
Last Closed: 2020-03-10 11:26:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1765678    
Attachments:
Description Flags
Expected Rally results after the bulking changes none

Description ffernand 2019-10-25 16:10:41 UTC 
Created attachment 1629280 [details]
Expected Rally results after the bulking changes

Description of problem:

When running rally create and list trunk scenario [0], the create_trunk operation with 125 subports takes almost 180 seconds to complete. The reason why this happens is that we're updating the binding information for every subport [1]

If we could instead bulk update all the subports with a single call to the plugin, the operation would be much faster. On the other hand but this is not yet supported in ML2 plugin AFAIK.

[0] https://opendev.org/openstack/rally-openstack/src/tag/1.5.0/rally_openstack/scenarios/neutron/trunk.py#L39
[1] https://github.com/openstack/networking-ovn/blob/6.0.0.0rc1/networking_ovn/ml2/trunk_driver.py#L59


Version-Release number of selected component (if applicable):
OSP13 (all versions)

How reproducible:
Always

Steps to Reproduce:
Easiest way for reproducing may be by running Rally. Look for how long it takes
to create 125 subports. Test neutron_create_trunk

Actual results:


Expected results:

https://storage.bhs1.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_d50/686571/7/check/networking-ovn-rally-task/d50dd5d/results/report.html.gz#/NeutronTrunks.create_and_list_trunks


Additional info:
Comment 5 errata-xmlrpc 2020-03-10 11:26:15 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:0770